• Nisse Mariam Wilson
• Ilayaraja S
• Rani V

Expansive soils cause severe issues in the practice of civil engineering because they swell and contract under moisture content fluctuations. This alternative swelling and shrinkage makes it impossible to rely on transportation and other buildings. These clays ability to swell can be successfully reduced by fly ash treatment, which can also stop swell from occurring beneath minor foundation stresses. This paper presents the study of the stabilization of expansive soil by by addition of 10%, 15%,20%,and 25% of Fly Ash as per weight of the total soil sample. Swell pressure and swell tests are conducted on the samples compacted at optimum moisture content by standard Proctor test. The significant variation in Liquid Limit, Plasticity Index also has been found Samples with fly ash caused a decrease in Liquid limit, plasticity index, swell pressure and thus swell percentage decrease substantially.

Expansive Soil,Fly ash , Standard Proctor test, Swell pressure

"Characteristics of expansive Soil ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.10, Issue 5, page no.m351-m354, May-2023, Available :http://www.jetir.org/papers/JETIR2305C50.pdf

"Characteristics of expansive Soil ", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.10, Issue 5, page no. ppm351-m354, May-2023, Available at : http://www.jetir.org/papers/JETIR2305C50.pdf